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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.7M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 4.1K |
| 1 |
| 2 |
| AS17270US | NYSTRS-AS1 - New York State Teachers' Retirement System | 4.1K | — | 9 |
| AS26178US | ATKINS-NORTH-AMERICA - AtkinsRealis | 4.1K | — | 10 |
| AS13712US | SMUMN - Saint Marys University of Minnesota | 4.1K | — | 2 |
| AS132110US | DMITINC-AS-AP - DMIT Inc | 4.1K | — | 16 |
| AS399768US | VER-CT-ASN-01 - Verition Group LLC | 4.1K | — | 11 |
| AS46248US | LSA-SQL-AZ - Sonora Quest Laboratories | 4.1K | — | 1 |
| AS16970US | MIDNET - MIDnet | 4.1K | 16 | 17 |
| AS35852US | YELLOW-KCGO - YRC Inc. | 4.1K | — | 13 |
| AS26652US | AIRSTREAM-BNC - Airstream Communications, LLC | 4.1K | 65.5K | 2 |
| AS29713US | ELIA-60 - Reliable Hosting Services | 4.1K | 4.1K | 7 |
| AS54576US | RESTORE ASN 54576 FOR HOAG MEMORIAL HOSPITAL - Hoag Memorial Hospital Presbyterian | 4.1K | — | 11 |
| AS63160US | KIRKLAND-ELLIS-CO - Kirkland & Ellis LLP | 4.1K | — | 1 |
| AS14859US | CAC-ASN - CENTRAL ARIZONA COLLEGE | 4.1K | — | 6 |
| AS27254US | ATCJET-NET - ATC COMMUNICATIONS | 4.1K | — | 1 |
| AS27316US | EICCD - Eastern Iowa Community College District | 4.1K | — | 8 |
| AS16824US | HARLANNET-ASN - Harlan Municipal Utilities | 4.1K | — | 9 |
| AS30008US | COLOGUYS - ColoGuys, Inc. | 4.1K | — | 1 |
| AS394883US | VISTABEAM - VISTABEAM | 4.1K | 65.5K | 2 |
| AS46597US | ECOMMERCE - Ecommerce Discovery, LLC | 4.1K | — | 9 |
| AS40583US | COLUMBIAGORGE-ESD - Columbia Gorge Education Service District | 4.1K | 65.5K | 10 |
| AS46469US | GETRESPONSE-IMPLIX - GETRESPONSE | 4.1K | — | 5 |
| AS14585US | CIFNET - CIFNet, Inc. | 4.1K | 65.5K | 11 |
| AS32178US | SCC-ASN-31004 - Sinclair Community College | 4.1K | — | 1 |
| AS16833US | PREBONYAMANEUSA - Tullett Prebon Americas Corp. | 4.1K | — | 16 |
| AS32765US | SENTCO - Sentco.net, LLC | 4.1K | 65.5K | 2 |
| AS26661US | JCPS-ASN - Jeffco Public Schools | 4.1K | — | 3 |
| AS398700US | CACTUS-INTERNATIONAL-INC - Cactus International, Inc. | 4.1K | 65.5K | 12 |
| AS6547US | DCT-ASN - DCT Technologies, Inc. | 4.1K | — | 1 |
| AS394666US | NYU-HOSPITALS-CENTER - NYU Langone Health | 4.1K | 65.5K | 10 |
| AS29826US | JH-ASN - John Hancock Life Insurance Company (U.S.A.) | 4.1K | — | 2 |
| AS17003US | ZOETIS-INC - Zoetis Inc. | 4.1K | — | 6 |
| AS23029US | ESTREET - E Street | 4.1K | — | 9 |
| AS22725US | HOME-COMMUNICATIONS-INC - Home Communications Inc | 4.1K | — | 4 |
| AS19977US | MBRML-AS - Mayer Brown LLP | 4.1K | — | 10 |
| AS393960US | HOST4GEEKS-LLC - Host4Geeks LLC | 4.1K | — | 10 |
| AS4016US | LANE-COUNTY-OR-GOV - Lane County | 4.1K | — | 1 |
| AS394356US | ICI - INTERNET COMMUNICATIONS INC. | 4.1K | — | 4 |
| AS55178US | COMPAS - City of Morganton | 4.1K | — | 16 |
| AS54594US | ILLUMINATE-HILLSBORO - Illuminate Hillsboro | 4.1K | 65.5K | 5 |
| AS398256US | AS-ULTAHOST - Ultahost, Inc. | 4.1K | — | 16 |
| AS1360US | MEWS-04 - Mayfield Electric & Water Systems | 4.1K | — | 1 |
| AS398313US | SFU - Saint Francis University | 4.1K | — | 1 |
| AS394472US | SWOI-ASN - SWOI | 4.1K | — | 1 |
| AS46749US | STANFORD-INTERNET-ACCESS - Stanford University | 4.1K | — | 1 |
| AS47002US | TIGERTECH - Tiger Technologies LLC | 4.1K | 4.1K | 5 |
| AS7258US | CATALOG-AS7258 - Webhero, Inc. | 4.1K | — | 1 |